S.F. No. 420 adds the term “townhouse” to the definitions applicable to the State Building Code. Defines the term to mean a single-family dwelling constructed in a group of three or more attached units in which each unit extends from the foundation to the roof and has open space on a least two sides of each unit. Minnesota Rules, 1309.0202, section R202, provides a definition of “townhouse” as a single-family dwelling constructed “in a group of two or more attached units.” The remainder of the definition in the bill is the same as the current definition in the rule.